By the singer



P. DIEHL GEAR hMOUNTING' Julyv 21, 192s.

onnngl Filed ocr. s1, 1912 2 sheets-sneu 1 orizinalsned oct. :51, 1912 2 sheets-shan 2 v ATTORNEY Reissued July 21, 1925'.

Re.N 16,119

UNITED s'rf'rras iniizelarA OFFICE..

PHILIP LIEHL, DEcEAsED, LATE orv ELIZABETH, NEW JERSEY; :BY THE SINGER MANUFACTURING COMPANY, '0E ELIZABETH, NEW JERSEY, AssIGNEE.

GEAR MOUNTING.

'Original No. 1,171,327, dated February 8,

1916, Serial No. 728,779,A led October'l, 1912. Application for reissue filed June`12,1925^. Serial No. 36,756.

To all whom 'it may concern:

` Be it known that PHILIP DIEHL, deceased, late a citizen of the UnitedStates, residing at'Elizabeth, in the county of Union and State of New Jersey, did invent certain new and useful Improvements in Grear Mount-- ings, of which the following is a specification, reference being had therein to the accompanying drawings. v

This invention relates to improvements in sewing machines, and has for its object .to provideimproved means for giving to the loop-taker its'rotary movements. y

As is well understood by those familiar with sewing machine construction, the features important to the development of high speed lock stitch sewing machines are the employment of a loop-taker having a plurality of rotations to one complete actuation ofv the needle-carrying bar, and a flexible connection, such as a belt, for transmitting power from the main or needle-bar-driving shaft tothe loop-taker. i y

'It is'conceded that for durability the employmentof a belt connection is undesirable, andprior to thel present invention gears of various forms and arrangement have been substituted, butowing to their exposed condition and manner of application andthe undesirablenoise common to co-acting gears driven at high speed-especially when subjected to sudden stopping and starting as in the operation of sewing machines driven vby mechanical vpower--they ihave proven less desirable than a belt.

In the present construction, the loop,- taker-driving shaft is relieved of kall transmission of power except to rotate the looptaker, and, accordingly, the Aconnection for operatively connecting the main shaft with `the loop-taken-driving 'shaft performs` a minimum of labor, and the gears are arranged and protected to avoid any perceptible vnoise due to their coaction; further, Vthe meansemployed for effecting the lubrication of the gears and the shaft bearings are Sodevised 4as to insure that no foreign substance will `enter the lubricant, and that the teeth 4of the several gears will at all times be cushioned againstdirect contact,

Athus avoiding the liability oftheir becoming'def'ective through the sudden stopping, starting for reversing of the actuating mechanism. v

' In the accompanying drawings illustrat-v ing the invention, in the several figures of which `like parts are similarly designated, Figure 1 is a view infront side elevation yof vase'wing machine embodying the im proved mechanism, the bracket arm and bed-platebeing Vshown in section and the feed-liftrock-shaft broken out to better ilylustrate the .relative action of the parts.

Fig. 2 is an underside view of the machine shown in Fig. 1, except that the lower oil receptacle is shown in section. Fig. 3 is a front end elevation of the machine shown in the previous figures, except that the bed- -plate is shown in cross section on a line correspondingsubstantially to the line of needle actuation. Fig. 4 is a detail view of ythe feed-adjusting mechanism. -Fig 5 is a view ofthe oppositelyarranged halves of the oil receptacle or retainer inclosing the gears connectingthe main or needle-bar-actuating shaft with the vertically arranged gear shaft, through which latter motion is transmitted Vto the looper-actuating shaft.V

Fig. 6 isa detail view of one ofthe halves of the oil receptacle inclo'sing the gears kconnecting the vertically arranged gear shaft with the looper-actuating shaft.

Referring to the figures, 1 represents the bed-plate of the sewing machine upon which is mounted the bracket-arm comprisingthe tubular arm bracket 2 and hollow standard 3, 4 the m'ain or needle-bar actuating shaft carrying at one end the bandorhand wheel '5 and at its opposite end the shaft vflange 6 connected by a link 7 with the needle-bar 8 carrying the eye-pointed needleA 9, and 10 one form of commonly employed take-up.v

11 represents thespring-depressed clothpresser-carrying bar, 12 the cloth-presser, 13

the front slide-plate and 14 the throat or needle-plate.

Upon the main-shaft 4 is suitably secured a feed-eccentric 15 provided with an eccentric ring 16, the latter having oppositely arranged ,straight s'surfacesxhas. 17, eaclizof which is `provi ed with a`.groove,..as 18', '(one only of said straight sides belng shown) ,aus-...iutqad ereeveaere moantedherespec't'ivl'e shoesul@ 'and 2U f of thegforied feedeccentric cdriii'ection 'Q'l whose lower end is pivotally attached to an arm 22 sec uredubyY pinch screw 23 and pin 24 to the feed rockshafti25, the `forward .end .of the. latter be ing provided with a crank arm 26 pivotally connected to one end of a feed-dog-carrying bar 27.1providedwith a feed-'dog 28, thus transmitting from Ethe feed-eccentric l5 feed movements .to said-feed-dog. 29 represents afbellcrank feed-adjusting leverpivoted by stud screw 30 to the bracketarm, and tothe arm 3l Vof said Vlever is .pivtally connected, by screw 32, one. end of azli'n'k 33. whose opposite. endis pivotally `attacheiil, by. screw 34, to the feed-eccentric connection 21, tlie arm. 35` ofsaid Vlever be- `ingf-provided with a screwf 36 the headfof which is located outside of the bracket-arm -and employedto shift said bell crank-lever on the-stud-'screw 30m-position the link 33 at an angle to the verticallyarranged movements of the connection; 21, to veffect the desired amplitude of feed movement as in earlier constructions.

37- represents the feed-lifty eccentric car- .ried'bythe main-shaft and encircled bythe upper-end of 'the feed-lift .eccentric connection 38. whose. lower. end is pivotally connected, by screW 39,'.to'an arm 4Q carriedgby the.fed-liftrock-shaft 4l, the forwardfend .ofthe lrock-shaftl carrying. a, crank-arm 42 provided with` a slide block which enters aforkedopening 44 lin theendgof;y the, feeddog-carrying bar 27, .thus transmitting vertically arranged -movements from the eccentric 37.to the feeddog28- A, K.. V .i .45 represents a, vertically arrangedgear shaftwhich carries ati'ts lower end a bevel -gea.r. 46 and atitsopposite end,I adike Vgear 47 ,f the latter inesliingiwitha bevel gea.r,48 carried by the.'Inain-sl1aft... 4, andfas said *gea1248 ancbgearei' ,are of thel .ratio ofhtwo -`toene, tliegear-shaft 45. is given twoprota- .tiene to one. r.o tat0h .0 Seid meinfeheft 'the gear cnieehng .inthe like gear@ ,carried.bythelooper-actuating shaft 50 provided ,with a loop-takerhl,A y r l I 'v Irnp" `r,.t ant,4 to5 the present construction is `the proridingY of substantially oil-tight f receptacles.. or retenereinelosing.the upper and Louter enacting .gears for @meeting .the

main-shaft and looper-actuating shaft with Y .2.; Referrlng to Figs.

i aalialeaasepia sent the two halves of the upper oil receptacle,

and in Figs. l and 6, 54 and 55 represent the two halves of the lower oil receptacle., in each instance the two halves being identical except that the half 52 is provided with a suitable opening (not shown) into: which is threaded a screw, said opening comprisiigfconvenient iiieans ...for replenisliing the lubricant. The separate halves of the upper. .reeepteele ere. .Seemed .tegether by e sere-W peseieahrieegh e .epenfg *57 'and threaded into the opening 58, the separate halves of the lower receptacle being secured together in like manner by a screw` passing through thej `opening 59 and threadedzintogthe opening 60.

The surfaces, as 6l, of the oil receptacles are milled or faced to insurefthautliejoint formed 'by Ysecuring .together thetwo: halves will be substantially 'leakage proof, andi to prevent. the ,leakage of lubricant .through the circular openings '62 formed .by the union of thesepaate halves and, t0 lirmly lthe receptacles against .accidental m9Vement the Walls .63.,arefole1d yby screws 56 into VAclontact. with the peripheral or securing surfaces of the stationary., members I. (54,`A coinprisiiig in the p reselntinstance bushingsinto which are mounted ,torota4te opposite..

ends of the Ashaftmll andthey rearhendsvplf theshafts 4 and. 5 0., lllieach instance the dividing ,linesI .of the i receptacles isubstantelly intersect the axes Ottheilifelee gs. In practice,l the Areceptacles,aresupplied with., Semi-field..lubricant eS grease ff `vaseline, As uiificientquanlt'idty tol insure ythat AtheLV gear teeth of one of lthe co-actingfgear members will "effect e. dSfit-l-Q .the ululoricantl `o venlthe gearteetli of` itspoacting gear member, substan.tiall'yi by dotted lineage@ ig'. 1,vvhichiii' effect v-tiley needle-bar-actuating tor vthe looperactuating shaft obvlila'tedl toan eXtent-Ztliat gives tio lthe; present.l construction 7subs tantial Aaplvaiitages o yer i 'those' Iemploying' belt :connections I for vlike ytlaiisiifission ofv power. jljzltving thus- 'set forth thefnatu're of lthe inventionLwhatigsclaimed'herein is' l, ,in .1 Spa-'ing @einen frame jconstugitd with va. bed-plate anclfa.V bracket-arm billete... transversely -iefised 'be secured to said frame and provided With inner shaft bearings and outer securing surfaces, shafts journaled in sai'd bearing bossed members, gear members operatively connecting said shafts, gear casings in which said gear members are inclosed, said gear Casings comprising` separate halves provided with transversely arranged walls fxedly secured only upon said outer securing surfaces to effect substantially oil tight'receptacles.

THE SINGER MANUFACTURING COMPANY, Assignee of the Entire Interest of Philip Diehl,A

Deceased,

By l". A. PARK,

Vice-President. 

